I-Polarity Reversing Rectifier (PRR) iyidivayisi yokunikeza amandla e-DC engashintsha i-polarity yokukhipha kwayo. Lokhu kuyenza ibe usizo ikakhulukazi ezinqubweni ezifana ne-electroplating, i-electrolysis, i-electromagnetic braking, kanye nokulawula i-DC motor, lapho kudingeka khona ukushintsha indlela yamanje.
1.Indlela Esebenza Ngayo
Ama-rectifier avamile aguqula i-AC ibe yi-DC nge-polarity engaguquki. Ama-PRR akhela phezu kwalokhu ngokusebenzisa amadivayisi kagesi alawulwayo—njenge-thyristors, ama-IGBT, noma ama-MOSFET—ukubuyisela emuva ukugeleza kwamanje. Ngokulungisa i-engeli yokudubula noma ukulandelana kokushintsha, idivayisi ingaguqula kahle noma ngokushesha umphumela usuke kokuhle uye kokubi.
2. Isakhiwo Sesiyingi
Ngokuvamile, i-PRR isebenzisa i-rectifier yebhuloho elawulwa ngokugcwele:
Okokufaka kwe-AC → Ibhuloho Lokulungisa Elilawulwayo → Isihlungi → Ukulayisha
Ibhuloho linezici ezine ezingalawuleka. Ngokulawula ukuthi yimaphi amadivayisi asebenza futhi nini, umphumela ungashintsha phakathi kwalokhu:
▪ I-polarity enhle: ukugeleza kwamandla kagesi kusuka esiphelweni esihle kuya emthwalweni.
▪ I-polarity engalungile: ukugeleza kwamanje ohlangothini oluphambene.
Amazinga e-voltage angalungiswa ngokushintsha i-trigger angle (α), okuvumela ukulawulwa okunembile kokubili kwe-polarity kanye nobukhulu.
3. Izicelo
(1) Ukufakelwa Kwe-Electroplating kanye ne-Electrolysis
Ezinye izinqubo zidinga ukuthi ugesi ubuyele emuva ngezikhathi ezithile ukuze kuthuthukiswe ikhwalithi yokumboza. Ama-PRR anikeza ukuhlinzekwa kwe-DC okulawulwayo, okuqondiswa yizinhlangothi zombili ukuze kuhlangatshezwane nale mfuneko.
(2) Ukulawulwa Kwemoto ye-DC
Isetshenziselwa ukusebenza phambili/ngemuva kanye nokubhuleka okuvuselelayo, ukubuyisela amandla ohlelweni.
(3) Ukubhuleka Kwama-electromagnetic
Ukubuyisela emuva kwamandla kwenza kube lula ukubhuleka okusheshayo noma ukukhululwa okulawulwayo kwezinhlelo zemishini.
(4) Ilabhorethri Nokuhlola
Ama-PRR ahlinzeka ngokukhipha kwe-bipolar DC okuhleliwe, okulungele ucwaningo, ukuhlolwa, kanye nokuhlolwa okudinga i-polarity eguquguqukayo.
Ama-rectifier aguqula i-polarity abe ngokubaluleka kakhulu embonini nasocwaningweni. Ahlanganisa ukulawulwa kwe-polarity okuguquguqukayo nokuguqulwa kwamandla okuphumelelayo, okwenza abe abalulekile ezinhlelweni eziningi zesimanje ze-elekthronikhi zamandla. Njengoba ubuchwepheshe bedivayisi nokulawula buthuthuka, kulindeleke ukuthi ama-PRR asetshenziswe kabanzi.
Isikhathi sokuthunyelwe: Okthoba-17-2025
